Sonder Sauna is a public beach sauna at Murrays Bay, on Auckland's North Shore. It is at 513 Beach Road, and the business calls it Auckland's newest beach sauna experience. Visitors can use a traditional wood-fired sauna followed by an ice bath, with views over the Hauraki Gulf. The business can also be hired for events.
The sauna is run as a mobile, self-contained unit, and the business says it chooses sites by the water's edge, in public reserves or near well-used paths. Sessions are booked in advance, and the business welcomes swimmers, walkers and anyone looking for quiet time by the water.